US4895650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic separation rack for diagnostic assays
Assignee: Gen Probe Inc
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Filing: 1988-02-25
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Granted: 1990-01-23
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Expires: 2008-02-25
Abstract
Abstract A magnetic separation rack and method for separating magnetically attractable particles used in an assay technique such as a heterogeneous diagnostic assay. The rack has a plurality of test tubes holders and a series of magnets positioned so that each test tube has one and only one magnetic immediately adjacent thereto. The magnet is on the side of the test tube at an upper position thereof without extending to the bottom. The particles are then attracted to the side of the test tube permitting removal or rinsing of the medium.
Inventors
- 👤 Robert Wang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:21
CPC Classifications
B; B01; B01L; B01L9/00; B01L9/06; B03; B03C; B03C1/00; B03C1/02; B03C1/025; B03C1/031; B03C1/033; B03C1/0332; B03C1/28; B03C1/288; G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/53; G01N33/543; G01N33/54313; G01N33/54326; B03C2201/00; B03C2201/18; B03C2201/26; G01N35/00; G01N35/0098; Y; Y10; Y10S; Y10S436/00; Y10S436/807; Y10S436/809
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
116 words
A magnetic separation rack for holding a plurality of containers, said rack comprising: a base; a top surface parallel to said base and having a plurality of apertures therethrough, said apertures arranged in rows and configured to accept and hold a top portion of the containers, the apertures holding each container in a position perpendicular to said top surface with a bottom portion of each container near said base; and a series of magnets positioned immediately adjacent to one side of the position for each container without extending to said base, wherein the position for each container has only one magnet immediately adjacent thereto, wherein said magnets are arranged between every other row of the apertures.
Claim 2
Dependent Claim
116 words
A magnetic separation rack for holding a plurality of containers, said rack comprising: a base; a top surface parallel to said base and having a plurality of apertures therethrough, said apertures arranged in rows and configured to accept and hold a top portion of the containers, the apertures holding each container in a position perpendicular to said top surface with a bottom portion of each container near said base; and a series of magnets positioned immediately adjacent to one side of the position for each container without extending to said base, wherein the position for each container has only one magnet immediately adjacent thereto, wherein said magnets are arranged between every other row of the apertures.
Claim 3
Dependent Claim
21 words
A magnetic separation rack according to claim 1 wherein said magnets are positioned with their magnetic axes parallel to said base.
Claim 4
Dependent Claim
109 words
A magnetic separation rack for holding a plurality of test tubes, said rack comprising: a base portion; a plurality of test tubes; a removable top portion having a series of apertures therethrough, said apertures configured to accept and hold the test tubes; a magnetic means immediately adjacent a side of each test tube and extending from near said removeable top portion along the length of each test tube without extending to a bottom of the test tubes, wherein each test tube has only one magnetic means immediately adjacent thereto, wherein said apertures are arranged in rows having aisles therebetween and wherein said magnetic means are positioned in alternating aisles.
Claim 5
Dependent Claim
109 words
A magnetic separation rack for holding a plurality of test tubes, said rack comprising: a base portion; a plurality of test tubes; a removable top portion having a series of apertures therethrough, said apertures configured to accept and hold the test tubes; a magnetic means immediately adjacent a side of each test tube and extending from near said removeable top portion along the length of each test tube without extending to a bottom of the test tubes, wherein each test tube has only one magnetic means immediately adjacent thereto, wherein said apertures are arranged in rows having aisles therebetween and wherein said magnetic means are positioned in alternating aisles.
Claim 6
Dependent Claim
22 words
A magnetic separation rack according to claim 3 wherein said magnetic means are positioned with their magnetic axes parallel to said base.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-01-22 | 1993-07-24 | 1994-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-01-22 | 1997-07-24 | 1998-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-01-22 | 2001-07-24 | 2002-01-23 | $7700.00 | Window Closed / Lapsed |